Extension of ring switching strategy to the glutamate antagonist 2-(pyrimidin-2,4-dione-5-ylmethyl)-(2S)-glycine and related compounds with two chiral centres
作者:Andrew Dinsmore、Paul M Doyle、Peter B Hitchcock、Douglas W Young
DOI:10.1016/s0040-4039(00)01800-1
日期:2000.12
base, followed by deprotection in a modification of our ring switching approach to the synthesis of glutamate antagonists. The product is an isomer of the natural product willardiine 7. Use of this two step strategy has allowed us to synthesise l-alanine derivatives, which are β-substituted by a reduced pyrimidinedione containing a second chiral centre. There is little difference between the diastereoisomers
2-(嘧啶-2,4-二酮-5-基甲基)-(2 S)-甘氨酸8的制备方法是,用温和的碱处理焦谷氨酸尿素12,然后在我们的环交换方法的一种修饰中脱保护。谷氨酸拮抗剂的合成。该产品是天然产物芥子碱7的异构体。使用这两个步骤的策略使我们能够合成1-丙氨酸衍生物,这些衍生物被包含第二个手性中心的还原嘧啶二酮β-取代。这些化合物之一作为代谢型谷氨酸受体的拮抗剂,其非对映异构体之间几乎没有差异。